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, (Namo-dei.) Y y G. R. CULLINGWORTH. GROSS HEAD AND PIsToN Ron GONNEGTON PoR ENGINBS. No. 301,966. Panteduuly 15,188.4.

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UNITED STATES PATENT OEEicE.,

GEORGE E.' OULLINGWOETH', OE NEW YOEK, N. Y.

CROSS-HEAD AND PlsToN-ROD CONNECTION FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 301,966, dated July 15, 1884.

4 Application filed March 21, i884. (No model.)

.T all whom, tn/tay concern:

Be it known that I,GEOEGE R. GULLING- WORTH, of the city and county of N ew York,

. in the State of New York, have invented a new and useful Improvement in Cross-Head and `Piston-Bod Connections for Engines, of w-hich the following is a specification.

My invention is applicable to those engines in which there are outside connecting-rods, which are iitted to wrists atthe two ends of the cross-head, and which are liable to vary in length by reason of imperfect construction or unequal wear and tightening of the brasses in the two rods; and the invention relates to those engines in which the piston-rod and cross-head arey pivotally connected, so that the piston or pistons will work easily and without excessive wear, whether the cross-head is at right angles to the alignment of -the cylinders or by reason of an unequal length in the connecting-rods is canted out of such position.

The invention consists in a novel construction of the pivotal connection between the cross-head and piston-rod, as hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings, Figure 1 represents a plan of such parts of an air-compressing engine as are necessary to illustrate my invention. Fig. 2 illustrates a transverse section of the piston-rod anda side view of the cross-head on a larger scale. Fig. 3 is a partly sectional plan ofthe cross-head on the same scale as Fig. 2; and Fig. 4 is a transverse section of the cross-head and swivelblock in a plane lengthwise of the piston-rod, and also on the same scale as Figs. 2 and 3.

Similar letters of reference designate corre-k s'ponding parts in all the gures.

A designates the steam-cylinder, and A designates the compressing or pump cylinder, which are arranged in line,'and the pistons of which are connected by a piston-rod consisting of two sections, B B. At the back end of the steam or actuating cylinder A is the crankshaft C, adapted to rotate insuitable bearings, a, and having at its* ends iy-wheels D, in which are crank-pins b. On the crank-'shaft C are the eccentries for operating the valve or valves ofthe steam-cylinder. The steam-cylinder may be provided with main and cut-off slide-valves, or any other well-known system which is capable of reciprocating in suitable guides, F. At the ends of thecross-head Eare wrists c, from which two outside connecting rods,F, extend to the crank-pins b.

The construction of the cross-head E and the manner of connecting the piston-rod sections B B therewith are best shown in Figs.

2, 3, and 4t. I provide a swivel-block, G, inA

opposite sides or ends of which are sockets d, into which the sections B B are screwed, and in which they are secured against turning by jam-nuts e, as ,best shown in Fig. 4c. 'Ihe two rod-sections B B may, however, be pinned or otherwise -secured in the said sockets.

rlhe cross-head E is constructed with a yoke, E', at the middle of its length, thus forming an opening which is large enough to receive the swivel-block G, and to allow the latter to swing or move freely, and the sole connection between said swivel-block and cross-head, and therefore between the piston-rod and 'crosshead, is formed by apin or bolt, H, which is inserted through the cross-head, and on which the swivel-block G may turn freely. rIhe sockets d are formed by a hole bored through" the swivel-block fromend to end, and. suflicient space is left between the adjacent ends of rod-sections B B for the passage of the bolt or pinvH. The opening formed by the yoke E in the cross-head E may be closed on oppositesides by plates f, attached by screws f', and having in them openings f2, of sufficient size to admit of any side movement of the piston-rod. The plate f is omitted in Fig. 2 in order to show the swivel-block G more clearly. The pin or bolt H has a bearing in the cross-head both above and below the swivel-block G, and hence is afforded adequate support.

I do not claim, broadly, a pivotal connection between the piston-rod and cross-head of an engine; but

What I claim as my invention, and desire to secure-by Letters Patent, is-

1. The combination, with a piston-rod, a cross-head constructed with a yoke at the middle of its length, and cross-head guides,'o f two I OO 1o tulle yoke E', the eross-hend guides F, the eonneebiug-rods F, the swivel-block G, and the pivot bolt or pin H, by which said block is connected with the eross-head, and which has @bearing in the cross-head both above and below Suid block, Substantially as and for the I5 purpose herein described.

G. R. CULLINGXVORTH. \Vit11es ses: Y

FRNDK. HAYNES, MAr'rUmv loLLoeK. 

